Throughout the Kingdom Hearts series, keyblade armor was exclusive to Master Eraqus and his pupils, Ventus, Aqua and Terra. We also fight No Heart in the mirage arena (basically a data version of Xehanorts armor) and Xemnas with the armor on. These are the only characters who have armors, if I can remember correctly.

However, I thought of an idea that could be really cool if implemented correctly.

Instead of armor being sold in shops/moogles, like in KH1 and KH2, they could instead sell pieces or sets of keyblade armor.

Think about this. The armor could physically appear on Sora's person' like Terra/Aqua/Ventus and it is interchangeable.

This type of system could make the armor customizable and upgradeable. This system also works for travel between worlds without the Gummi ship. However, this system also makes it possible for drive forms to appear and not lose functionality. Thanks for reading and uh, what do you think of this idea?

I think Keyblade armour as some sort of Drive Form would be pretty neat. The Keyblade Glider is literally calling out to a Treasure Planet world.

I think Keyblade armour as some sort of Drive Form would be pretty neat. The Keyblade Glider is literally calling out to a Treasure Planet world.

 But in terms of story, I don't think keyblade armour as a drive form would make sense, but hey, Nomura makes the games. I hope the armor system does get revamped and has other uses other than maximum ap+ or increased def/resistance.